<template>
  <div class="account-box">
    <div class="toggle">
      <a @click="isMsgLogin=false" href="javascript:;" v-if="isMsgLogin">
        <i class="iconfont icon-user"></i> 使用账号登录
      </a>
      <a @click="isMsgLogin=true" href="javascript:;" v-else>
        <i class="iconfont icon-msg"></i> 使用短信登录
      </a>
    </div>
    <Form ref="target" class="form" :validation-schema="schema" v-slot="{errors}" autocomplete="off">
      <template v-if="!isMsgLogin">
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-user"></i>
            <Field :class="{error:errors.account}" v-model="form.account" name="account" type="text" autocomplete="new-password" placeholder="请输入用户名或手机号" />
          </div>
          <!-- 错误提示 -->
          <div class="error" v-if="errors.account">
            <i class="iconfont icon-warning" />{{errors.account}}
          </div>
        </div>
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-lock"></i>
            <Field v-model="form.password" name="password" type="password" autocomplete="new-password" placeholder="请输入密码"  />
          </div>
          <!-- 错误提示 -->
          <div class="error" v-if="errors.password">
            <i class="iconfont icon-warning" />{{errors.password}}
          </div>
        </div>
      </template>
      <template v-else>
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-user"></i>
            <Field v-model="form.mobile" name="mobile" autocomplete="new-password" type="text" placeholder="请输入手机号" />
          </div>
          <!-- 错误提示 -->
          <div class="error" v-if="errors.mobile">
            <i class="iconfont icon-warning" />{{errors.mobile}}
          </div>
        </div>
        <div class="form-item">
          <div class="input">
            <i class="iconfont icon-code"></i>
            <Field v-model="form.code" name="code" autocomplete="new-password" type="text" placeholder="请输入验证码" />
            <span @click="sendCode()" class="code">
              {{time === 0 ? '发送验证码' : `${time}秒后发送`}}
            </span>
          </div>
          <!-- 错误提示 -->
          <div class="error" v-if="errors.code">
            <i class="iconfont icon-warning" />{{errors.code}}
          </div>
        </div>
      </template>
      <div class="form-item">
        <div class="agree">
          <Field as="ShopCheckbox" name="isAgree" v-model="form.isAgree" />
          <span>我已同意</span>
          <a href="javascript:;">《隐私条款》</a>
          <span>和</span>
          <a href="javascript:;">《服务条款》</a>
        </div>
        <!-- 错误提示 -->
        <div class="error" v-if="errors.isAgree">
          <i class="iconfont icon-warning" />{{errors.isAgree}}
        </div>
      </div>
      <a @click="login" href="javascript:;" class="btn">登录</a>
    </Form>
    <div class="action">
      <img src="https://qzonestyle.gtimg.cn/qzone/vas/opensns/res/img/Connect_logo_7.png" alt="">
      <div class="url">
        <a href="javascript:;">忘记密码</a>
        <a href="javascript:;">免费注册</a>
      </div>
    </div>
  </div>
</template>

<script>
import { onUnmounted, reactive, ref, watch } from 'vue'
import { Form, Field } from 'vee-validate'
import schema from '@/utils/vee-validate-schema'
import Message from '@/components/library/Message'
import { userAccountLogin, userMobileLogin, userMobileLoginMsg } from '@/api/user'
import { useStore } from 'vuex'
import { useRoute, useRouter } from 'vue-router'
import { useIntervalFn } from '@vueuse/shared'
export default {
  name: 'LoginForm',
  components: { Form, Field },
  setup () {
    // 切换登录方式
    const isMsgLogin = ref(false)
    // 绑定Form元素
    const target = ref(null)
    const store = useStore()
    const router = useRouter()
    const route = useRoute()
    // 监听 isMsgLogin 重置表单
    watch(isMsgLogin, () => {
      // 重置数据
      form.isAgree = true
      form.account = null
      form.password = null
      form.mobile = null
      form.code = null
      // 如果使用v-show，即没有销毁组件，之前的校验结果不会清除
      // Form组件提供了一个resetForm函数清除校验结果，需要使用ref绑定元素调用
      // target.value.resetForm
    })
    // getCurrentInstance()拿到app实例，{ proxy }是当前组件实例
    // const { proxy } = getCurrentInstance()
    // proxy.$message({ type: 'error', text: '用户名或密码错误' })
    // 点击登录进行整体表单校验
    const login = async () => {
      // Form组件提供了一个validate函数进行整体表单校验，函数返回的是一个Promise
      const validVal = await target.value.validate()
      if (validVal) {
        try {
          let data = null
          if (isMsgLogin.value) {
            // **手机号登录
            const { mobile, code } = form
            data = await userMobileLogin({ mobile, code })
          } else {
            // **账号登录
            const { account, password } = form
            data = await userAccountLogin({ account, password })
          }
          // 存储用户信息到 vuex
          const { id, account, avatar, mobile, nickname, token } = data.result
          store.commit('user/setUser', { id, account, avatar, mobile, nickname, token })
          // 进行跳转,跳转到来源页或首页
          router.push(route.query.redirectUrl || '/')
          // 提示成功
          Message({ type: 'success', text: '登录成功！' })
        } catch (e) {
          // 失败提示
          if (e.response.data) {
            Message({ type: 'success', text: e.response.data.message || '登录失败' })
          }
        }
      }
    }
    // 表单数据
    const form = reactive({
      isAgree: true,
      account: null,
      password: null,
      mobile: null,
      code: null
    })
    // 使用vee-validate校验
    // 1.导入 Form, Field 组件，将 form 和 input 替换，加上name用于指定将来校验规则
    // 2.Field 需要进行双向数据绑定，字段名称和后台接口的保持一致
    // 3.定义 Field 的 name 属性指定的校验规则函数，Form的 validation-schema接收校验规则对象
    const mySchema = {
      // 校验函数规则，返回true就是校验成功，返回一个字符串就是失败，字符串就是错误提示
      account: schema.account,
      password: schema.password,
      mobile: schema.mobile,
      code: schema.code,
      isAgree: schema.isAgree
    }
    // vueuse提供的useIntervalFn方法，pause暂停定时器，resume开启定时器
    // useIntervalFn(回调函数，执行间隔，是否立即打开)
    const time = ref(0)
    const { pause, resume } = useIntervalFn(() => {
      time.value--
      if (time.value <= 0) {
        pause()
      }
    }, 1000, { immediate: false })
    onUnmounted(() => {
      pause()
    })
    // 点击发送验证码
    const sendCode = async () => {
      const validVal = mySchema.mobile(form.mobile)
      console.log(validVal);
      if (validVal === true) {
        // 通过校验
        if (time.value === 0) {
          await userMobileLoginMsg(form.mobile)
          Message({ type: 'success', text: '发送成功！' })
          time.value = 60
          resume()
        }
      } else {
        // 不通过校验
        // 使用vee的错误函数显示错误信息，setFieldError(字段，错误信息)
        target.value.setFieldError('mobile', validVal)
      }
    }
    return { isMsgLogin, form, schema: mySchema, target, login, sendCode, time }
  }
}
</script>

<style lang="less" scoped>
.account-box {
  .toggle {
    padding: 15px 40px;
    text-align: right;
    a {
      color: @themeColor;
      i {
        font-size: 14px;
      }
    }
  }
  .form {
    padding: 0 40px;
    &-item {
      margin-bottom: 28px;
      .input {
        position: relative;
        height: 36px;
        > i {
          width: 34px;
          height: 34px;
          background: @themeColor;
          color: #fff;
          position: absolute;
          left: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 18px;
        }
        input {
          padding-left: 44px;
          border: 1px solid #cfcdcd;
          height: 36px;
          line-height: 36px;
          width: 100%;
          &.error {
            border-color: @priceColor;
          }
          &.active,&:focus {
            border-color: @themeColor;
          }
        }
        .code {
          position: absolute;
          right: 1px;
          top: 1px;
          text-align: center;
          line-height: 34px;
          font-size: 14px;
          background: #f5f5f5;
          color: #666;
          width: 90px;
          height: 34px;
          cursor: pointer;
        }
      }
      > .error {
        position: absolute;
        font-size: 12px;
        line-height: 28px;
        color: @priceColor;
        i {
          font-size: 14px;
          margin-right: 2px;
        }
      }
    }
    .agree {
      a {
        color: #069;
      }
    }
    .btn {
      display: block;
      width: 100%;
      height: 40px;
      color: #fff;
      text-align: center;
      line-height: 40px;
      background: @themeColor;
      &.disabled {
        background: #cfcdcd;
      }
    }
  }
  .action {
    padding: 20px 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    .url {
      a {
        color: #999;
        margin-left: 10px;
        &:hover {
          color: @themeColor;
        }
      }
    }
  }
}
</style>
